How to: Create Simple and Clean password strength checker using jquery and css.


Jquery is very clean and easy to integrate in web applications. To create password strength checker with jquery is simple and can be done easily. Recently , in my latest project , I have used it and liked the way it changes color.

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Here is the DEMO

Step 1: HTML Setup

Copy the following code inside your body tag or where ever you need this checker.

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<div id="single_form_element">
	<label class="label" for="new_pass">Password</label>
	<input type="password" name="password" value="" class="password-box"/>
	<div class="chk_avlblty chk_pswd"><span class="password-strength"></span> <span class="strength-text">Type Password</span></div>
</div>

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Step 2: CSS Setup

Copy the following CSS code inside your stylesheet. You can change style as per your requirements.

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#single_form_element{margin-top:50px;}
#single_form_element .chk_avlblty{margin: 10px 0 0 110px;width:110px;text-align:right;}
#single_form_element .strength-text{font-size:13px;font-weight:bold;}
#single_form_element .chk_avlblty span.password-strength{width:110px;-moz-border-radius:5px;-webkit-border-radius:5px;height:10px;background-color:#555;display:block;}
#single_form_element .chk_avlblty span.client-avail{display:block;}

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Step 3: Javascript setup

Copy the following code inside your head tag.

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         <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
	<script type="text/javascript" src="/demos/js/passwordstrength.js"></script>
		<script type="text/javascript">
		$(document).ready(function(){
			$( 'input.password-box' ).live( 'keyup', function() {
			var howStrong = passwordStrength( $( this ).val() );
			$( '.strength-text', $( this ).next() ).text( howStrong );
			var sColor = '#555';
			switch( howStrong ) {
				case 'Strong' :
					$( '.password-strength', $( this ).next() ).css( 'background-color', 'green' );
					break;
				case 'Medium' :
					$( '.password-strength', $( this ).next() ).css( 'background-color', 'lightgreen' );
					break;
				case 'Weak' :
					$( '.password-strength', $( this ).next() ).css( 'background-color', 'orange' );
					break;
				case 'Short' :
					$( '.password-strength', $( this ).next() ).css( 'background-color', 'red' );
					break;
				default :
					$( '.password-strength', $( this ).next() ).css( 'background-color', '#555' );
			}
			}).focusout( function() {
				$( this ).trigger( 'keyup' );
			});
 
	});
 
</script>

All Done!

Check how it Looks. DEMO

Cheers!!

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